cb97d93e9d
Since we are going to need to map hugepages in both primary and secondary processes, we need to know where we should look for hugetlbfs mountpoints. So, share those with secondary processes, and map them on init. Signed-off-by: Anatoly Burakov <anatoly.burakov@intel.com> Tested-by: Santosh Shukla <santosh.shukla@caviumnetworks.com> Tested-by: Hemant Agrawal <hemant.agrawal@nxp.com> Tested-by: Gowrishankar Muthukrishnan <gowrishankar.m@linux.vnet.ibm.com>
41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#ifndef EAL_HUGEPAGES_H
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#define EAL_HUGEPAGES_H
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#include <stddef.h>
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#include <stdint.h>
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#include <limits.h>
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#define MAX_HUGEPAGE_PATH PATH_MAX
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/**
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* Structure used to store informations about hugepages that we mapped
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* through the files in hugetlbfs.
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*/
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struct hugepage_file {
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void *orig_va; /**< virtual addr of first mmap() */
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void *final_va; /**< virtual addr of 2nd mmap() */
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uint64_t physaddr; /**< physical addr */
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size_t size; /**< the page size */
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int socket_id; /**< NUMA socket ID */
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int file_id; /**< the '%d' in HUGEFILE_FMT */
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char filepath[MAX_HUGEPAGE_PATH]; /**< path to backing file on filesystem */
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};
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/**
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* Read the information on what hugepages are available for the EAL to use,
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* clearing out any unused ones.
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*/
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int eal_hugepage_info_init(void);
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/**
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* Read whatever information primary process has shared about hugepages into
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* secondary process.
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*/
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int eal_hugepage_info_read(void);
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#endif /* EAL_HUGEPAGES_H */
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